my schoolmate learned foreign languages last year ,сделать из этого предложения отрицательную форму, альтернативную,разделительный

Раскрыть скобки и поставить глагол в нужной форме.

When I (go) shopping, I (see) my friend. I ___ (say) ‘Hello!’ and we (start) talking. While we (talk), a car (run into) a man on a bike. When we (see) the accident, I (phone) for an ambulance. While I (wait) for the ambulance, a policeman (arrive). He (ask) us some questions. The ambulance (come), while I (talk) to the policeman. The ambulance (take) the man to hospital and we (go) to a cafe for a cup of coffee. While we (drink) our coffee, we (discuss) about the accident.

When I was going (go) to the shops, I saw (see) my friend. When I saw (see) my friend, I said (say) ‘Hello!’ While we were talking (talk), a car ran into (run into) a man on a bike. When we saw (see) the accident, I phoned (phone) for an ambulance. While I was waiting(wait) for the ambulance, a policeman arrived (arrive). When the policeman arrived (arrive), he asked (ask) us some questions. The ambulance came (come), while I was talking (talk) to the policeman. The ambulance took (take) the man to hospital and we went (go) for a cup of coffee. While we were drinking (drink) our coffee, we were talking (talk) about the accident.